The height of mechanical mixing layer is one of the parameter of the safety analysis report of any industrial (nuclear) facility due to its relation to the dispersion factor of pollutants. It can provide information about lower atmospheric dispersion, which is usually used to study the pollutants released from nuclear facility, risk analysis and emergency planning. Mixing layer height is diffic...

In a cohort study of 5464 union organised Swedish chimney sweeps employed at any time between 1918 and 1980 mortality was studied from 1951 to 1982 with national statistics used as a reference. Follow up was possible for 98.6% of the individuals: 717 deaths were observed against 540 expected. There was an increased mortality from coronary heart disease, respiratory diseases, and several types o...

Since the publication of the first Ion Source Studies document there have been improvements in both the understanding and implementation of the ion source system.[1] The understanding has been greatly assisted by the 3-dimensional E&M particle tracking code SIMION. Several experiments in the adjustment of the ions’ initial condition have benchmarked our 3D model as well as identified the source...

Deep-sea hydrothermal vents are one of the most unique and fascinating ecosystems on Earth. Although phylogenetic diversity of vent communities has been extensively examined, their physiological diversity is poorly understood. In this study, a GeoChip-based, high-throughput metagenomics technology revealed dramatic differences in microbial metabolic functions in a newly grown protochimney (inne...

passive solar systems such as solar chimneys need solar radiation in order to work. therefore, they cannot present stable natural ventilation when solar energy vanishes: to have a more robust and stable condition, solar energy should be stored during the day and released back during the night. phase change materials can save additional thermal energy during the day and release it during the nig...

Natural ventilation is considered as an effective way to improve and thermal comfort reduce energy consumption in residential buildings. In this sense, natural done by a solar chimney. It used increase the air flow through room converting into kinetic energy. work, we intend present results of three dimensional numerical simulation ANSYS software equipped with chimney semiarid climatic conditio...

We present a saccular asymptomatic juxtarenal abdominal aortic aneurysm in a 70-year-old male with a very short left renal artery supplying the only kidney. The case was successfully treated with the Nellix EndoVascular Aneurysm Sealing system combined with a chimney technique.

Post-EVAR type III endoleaks present a particular challenge as they carry a significant risk of rupture. We present a case of an 81-year-old gentleman, 10 years post-EVAR, with complex type III endoleak with component separation that was successfully treated with a combination of left renal artery chimney, aortouniiliac stent grafting and femorofemoral crossover bypass.